The US Senate, by a 62-38 margin, passed the most sweeping immigration overhaul in decades.
But even though many in the Senate praised the bill, people on the streets of Tucson protested.
"We thought we'd be celebrating, not protesting," said Sarah Launius, one of the downtown protest organizers.
About a half dozen groups, including Derechos Humanos and No More Deaths and a hundred people gathered in front of the federal building at Congress and Granada to express their displeasure at the bill.
The bill will add nearly 20,000 more border patrol agents, complete 700 miles of fence and give a path to citizenship for 11 million people who are here illegally.
The groups feel the added border patrol agents, soldiers they called them, militarizes the border and will lead to more deaths among the migrants who are crossing the border.
At the demo station, there was a group of women dressed in black with the year 2002 through 2012 painted on their shoulders with numbers, including the 230 immigrants which were found dead in the desert in 2012, one of the deadliest years.
Others chanted "Si se puede", yes we can, as cars honked their horns as they passed on their way home from work.
The groups say even though this legislation is not what they hoped for, it stands less of a chance of passage in the house.
The groups, which braved 110 degree temperatures said they would disband after about 90 minutes because in the heat it was hard to maintain a high energy level.
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